Drink like a fish

Meaning

Drink heavily, especially of alcoholic drink.

Origin

Clearly an allusion to fishes' close association with water and their continuous open-mouthed taking in of water to obtain oxygen. The phrase is known since 1640 and appears in Fletcher and Shirley's The night-walker, or the little theife, from that date:

"Give me the bottle, I can drink like a Fish now, like an Elephant."

'Drink like an elephant' didn't catch on. There is a more recent potential boost to use 'drink like a fish' - at least for Californian Valley girls. In January 2005 a press release for the Dalian Fisherman's Song Maritime Biological Brewery in China, said that they had developed a fermentation process to make fish into wine. So now, you can 'drink, like, a fish'.